Added cleanup of local docker engine after migration
Added cleanup of local docker engine after migration

Signed-off-by: Matt Bentley <a4e56598049e54fa07c0226590d66e7e997fd9a8@mbentley.net>

wangyumi/migrator,pcorliss/migrator,docker/migrator,jcderr/migrator,bgrissin/migrator,mbentley/migrator